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<a name="GDBusMethodInvocation"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="GDBusMethodInvocation.top_of_page"></a>GDBusMethodInvocation</span></h2>
<p>GDBusMethodInvocation — Object for handling remote calls</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GDBusMethodInvocation.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-sender" title="g_dbus_method_invocation_get_sender ()">g_dbus_method_invocation_get_sender</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-object-path" title="g_dbus_method_invocation_get_object_path ()">g_dbus_method_invocation_get_object_path</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-interface-name" title="g_dbus_method_invocation_get_interface_name ()">g_dbus_method_invocation_get_interface_name</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-method-name" title="g_dbus_method_invocation_get_method_name ()">g_dbus_method_invocation_get_method_name</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusMethodInfo"><span class="returnvalue">GDBusMethodInfo</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-method-info" title="g_dbus_method_invocation_get_method_info ()">g_dbus_method_invocation_get_method_info</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusPropertyInfo"><span class="returnvalue">GDBusPropertyInfo</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-property-info" title="g_dbus_method_invocation_get_property_info ()">g_dbus_method_invocation_get_property_info</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="returnvalue">GDBusConnection</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-connection" title="g_dbus_method_invocation_get_connection ()">g_dbus_method_invocation_get_connection</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDBusMessage.html" title="GDBusMessage"><span class="returnvalue">GDBusMessage</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-message" title="g_dbus_method_invocation_get_message ()">g_dbus_method_invocation_get_message</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-GVariant.html#GVariant"><span class="returnvalue">GVariant</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-parameters" title="g_dbus_method_invocation_get_parameters ()">g_dbus_method_invocation_get_parameters</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-user-data" title="g_dbus_method_invocation_get_user_data ()">g_dbus_method_invocation_get_user_data</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-value" title="g_dbus_method_invocation_return_value ()">g_dbus_method_invocation_return_value</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error" title="g_dbus_method_invocation_return_error ()">g_dbus_method_invocation_return_error</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error-valist" title="g_dbus_method_invocation_return_error_valist ()">g_dbus_method_invocation_return_error_valist</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error-literal" title="g_dbus_method_invocation_return_error_literal ()">g_dbus_method_invocation_return_error_literal</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-gerror" title="g_dbus_method_invocation_return_gerror ()">g_dbus_method_invocation_return_gerror</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-dbus-error" title="g_dbus_method_invocation_return_dbus_error ()">g_dbus_method_invocation_return_dbus_error</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-take-error" title="g_dbus_method_invocation_take_error ()">g_dbus_method_invocation_take_error</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-value-with-unix-fd-list" title="g_dbus_method_invocation_return_value_with_unix_fd_list ()">g_dbus_method_invocation_return_value_with_unix_fd_list</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDBusMethodInvocation.html#GDBusMethodInvocation-struct" title="GDBusMethodInvocation">GDBusMethodInvocation</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="../gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> GDBusMethodInvocation
</pre>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gio/gio.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.description"></a><h2>Description</h2>
<p>Instances of the <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> class are used when
handling D-Bus method calls. It provides a way to asynchronously
return results and errors.</p>
<p>The normal way to obtain a <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> object is to receive
it as an argument to the <code class="function">handle_method_call()</code> function in a
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> that was passed to <a class="link" href="GDBusConnection.html#g-dbus-connection-register-object" title="g_dbus_connection_register_object ()"><code class="function">g_dbus_connection_register_object()</code></a>.</p>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-sender"></a><h3>g_dbus_method_invocation_get_sender ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_dbus_method_invocation_get_sender (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the bus name that invoked the method.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-sender.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-sender.returns"></a><h4>Returns</h4>
<p> A string. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-object-path"></a><h3>g_dbus_method_invocation_get_object_path ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_dbus_method_invocation_get_object_path
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the object path the method was invoked on.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-object-path.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-object-path.returns"></a><h4>Returns</h4>
<p> A string. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-interface-name"></a><h3>g_dbus_method_invocation_get_interface_name ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_dbus_method_invocation_get_interface_name
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the name of the D-Bus interface the method was invoked on.</p>
<p>If this method call is a property Get, Set or GetAll call that has
been redirected to the method call handler then
"org.freedesktop.DBus.Properties" will be returned.  See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-interface-name.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-interface-name.returns"></a><h4>Returns</h4>
<p> A string. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-method-name"></a><h3>g_dbus_method_invocation_get_method_name ()</h3>
<pre class="programlisting">const <a href="../glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
g_dbus_method_invocation_get_method_name
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the name of the method that was invoked.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-method-name.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-method-name.returns"></a><h4>Returns</h4>
<p> A string. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-method-info"></a><h3>g_dbus_method_invocation_get_method_info ()</h3>
<pre class="programlisting">const <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusMethodInfo"><span class="returnvalue">GDBusMethodInfo</span></a> *
g_dbus_method_invocation_get_method_info
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets information about the method call, if any.</p>
<p>If this method invocation is a property Get, Set or GetAll call that
has been redirected to the method call handler then <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> will be
returned.  See <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-get-property-info" title="g_dbus_method_invocation_get_property_info ()"><code class="function">g_dbus_method_invocation_get_property_info()</code></a> and
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-method-info.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-method-info.returns"></a><h4>Returns</h4>
<p> A <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusMethodInfo"><span class="type">GDBusMethodInfo</span></a> or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-property-info"></a><h3>g_dbus_method_invocation_get_property_info ()</h3>
<pre class="programlisting">const <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusPropertyInfo"><span class="returnvalue">GDBusPropertyInfo</span></a> *
g_dbus_method_invocation_get_property_info
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets information about the property that this method call is for, if
any.</p>
<p>This will only be set in the case of an invocation in response to a
property Get or Set call that has been directed to the method call
handler for an object on account of its <code class="function">property_get()</code> or
<code class="function">property_set()</code> vtable pointers being unset.</p>
<p>See <a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information.</p>
<p>If the call was GetAll, <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> will be returned.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-property-info.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-property-info.returns"></a><h4>Returns</h4>
<p>a <a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusPropertyInfo"><span class="type">GDBusPropertyInfo</span></a> or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-38.html#api-index-2.38">2.38</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-connection"></a><h3>g_dbus_method_invocation_get_connection ()</h3>
<pre class="programlisting"><a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="returnvalue">GDBusConnection</span></a> *
g_dbus_method_invocation_get_connection
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a> the method was invoked on.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-connection.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-connection.returns"></a><h4>Returns</h4>
<p>A <a class="link" href="GDBusConnection.html" title="GDBusConnection"><span class="type">GDBusConnection</span></a>. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-message"></a><h3>g_dbus_method_invocation_get_message ()</h3>
<pre class="programlisting"><a class="link" href="GDBusMessage.html" title="GDBusMessage"><span class="returnvalue">GDBusMessage</span></a> *
g_dbus_method_invocation_get_message (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the <a class="link" href="GDBusMessage.html" title="GDBusMessage"><span class="type">GDBusMessage</span></a> for the method invocation. This is useful if
you need to use low-level protocol features, such as UNIX file
descriptor passing, that cannot be properly expressed in the
<a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> API.</p>
<p>See this <a class="link" href="GDBusConnection.html#gdbus-server" title="An example D-Bus server">server</a> and <a class="link" href="GDBusConnection.html#gdbus-unix-fd-client" title="An example for file descriptor passing">client</a>
for an example of how to use this low-level API to send and receive
UNIX file descriptors.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-message.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-message.returns"></a><h4>Returns</h4>
<p><a class="link" href="GDBusMessage.html" title="GDBusMessage"><span class="type">GDBusMessage</span></a>. Do not free, it is owned by <em class="parameter"><code>invocation</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-parameters"></a><h3>g_dbus_method_invocation_get_parameters ()</h3>
<pre class="programlisting"><a href="../glib-GVariant.html#GVariant"><span class="returnvalue">GVariant</span></a> *
g_dbus_method_invocation_get_parameters
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the parameters of the method invocation. If there are no input
parameters then this will return a GVariant with 0 children rather than NULL.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-parameters.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-parameters.returns"></a><h4>Returns</h4>
<p>A <a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> tuple. Do not unref this because it is owned by <em class="parameter"><code>invocation</code></em>
. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-get-user-data"></a><h3>g_dbus_method_invocation_get_user_data ()</h3>
<pre class="programlisting"><a href="../glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a>
g_dbus_method_invocation_get_user_data
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>);</pre>
<p>Gets the <em class="parameter"><code>user_data</code></em>
 <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> passed to <a class="link" href="GDBusConnection.html#g-dbus-connection-register-object" title="g_dbus_connection_register_object ()"><code class="function">g_dbus_connection_register_object()</code></a>.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-user-data.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="g-dbus-method-invocation-get-user-data.returns"></a><h4>Returns</h4>
<p> A <a href="../glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-value"></a><h3>g_dbus_method_invocation_return_value ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_value (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                       <em class="parameter"><code><a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> *parameters</code></em>);</pre>
<p>Finishes handling a D-Bus method call by returning <em class="parameter"><code>parameters</code></em>
.
If the <em class="parameter"><code>parameters</code></em>
 GVariant is floating, it is consumed.</p>
<p>It is an error if <em class="parameter"><code>parameters</code></em>
 is not of the right format: it must be a tuple
containing the out-parameters of the D-Bus method. Even if the method has a
single out-parameter, it must be contained in a tuple. If the method has no
out-parameters, <em class="parameter"><code>parameters</code></em>
 may be <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> or an empty tuple.</p>
<div class="informalexample">
  <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
    <tbody>
      <tr>
        <td class="listing_lines" align="right"><pre>1
2
3
4
5
6
7
8
9
10
11
12
13</pre></td>
        <td class="listing_code"><pre class="programlisting">GDBusMethodInvocation <span class="gtkdoc opt">*</span>invocation <span class="gtkdoc opt">=</span> some_invocation<span class="gtkdoc opt">;</span>
g_autofree gchar <span class="gtkdoc opt">*</span>result_string <span class="gtkdoc opt">=</span> NULL<span class="gtkdoc opt">;</span>
<span class="function"><a href="../glib-Miscellaneous-Macros.html#g-autoptr">g_autoptr</a></span> <span class="gtkdoc opt">(</span>GError<span class="gtkdoc opt">)</span> error <span class="gtkdoc opt">=</span> NULL<span class="gtkdoc opt">;</span>

result_string <span class="gtkdoc opt">=</span> <span class="function">calculate_result</span> <span class="gtkdoc opt">(&amp;</span>error<span class="gtkdoc opt">);</span>

<span class="keyword">if</span> <span class="gtkdoc opt">(</span>error <span class="gtkdoc opt">!=</span> NULL<span class="gtkdoc opt">)</span>
  <span class="function"><a href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-gerror">g_dbus_method_invocation_return_gerror</a></span> <span class="gtkdoc opt">(</span>invocation<span class="gtkdoc opt">,</span> error<span class="gtkdoc opt">);</span>
<span class="keyword">else</span>
  <span class="function"><a href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-value">g_dbus_method_invocation_return_value</a></span> <span class="gtkdoc opt">(</span>invocation<span class="gtkdoc opt">,</span>
                                         <span class="function"><a href="../glib-GVariant.html#g-variant-new">g_variant_new</a></span> <span class="gtkdoc opt">(</span><span class="string">&quot;(s)&quot;</span><span class="gtkdoc opt">,</span> result_string<span class="gtkdoc opt">));</span>

<span class="gtkdoc opt">/&lt;!-- --&gt;*</span> Do <span class="keyword">not</span> free &#64;invocation here<span class="gtkdoc opt">;</span> returning a value does that <span class="gtkdoc opt">*&lt;!-- --&gt;/</span></pre></td>
      </tr>
    </tbody>
  </table>
</div>

<p></p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<p>Since 2.48, if the method call requested for a reply not to be sent
then this call will sink <em class="parameter"><code>parameters</code></em>
 and free <em class="parameter"><code>invocation</code></em>
, but
otherwise do nothing (as per the recommendations of the D-Bus
specification).</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-value.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>parameters</p></td>
<td class="parameter_description"><p>A <a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> tuple with out parameters for the method or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if not passing any parameters. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-error"></a><h3>g_dbus_method_invocation_return_error ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_error (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                       <em class="parameter"><code><a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> domain</code></em>,
                                       <em class="parameter"><code><a href="../glib-Basic-Types.html#gint"><span class="type">gint</span></a> code</code></em>,
                                       <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *format</code></em>,
                                       <em class="parameter"><code>...</code></em>);</pre>
<p>Finishes handling a D-Bus method call by returning an error.</p>
<p>See <a class="link" href="gio-GDBusError.html#g-dbus-error-encode-gerror" title="g_dbus_error_encode_gerror ()"><code class="function">g_dbus_error_encode_gerror()</code></a> for details about what error name
will be returned on the wire. In a nutshell, if the given error is
registered using <a class="link" href="gio-GDBusError.html#g-dbus-error-register-error" title="g_dbus_error_register_error ()"><code class="function">g_dbus_error_register_error()</code></a> the name given
during registration is used. Otherwise, a name of the form
<code class="literal">org.gtk.GDBus.UnmappedGError.Quark...</code> is used. This provides
transparent mapping of <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> between applications using GDBus.</p>
<p>If you are writing an application intended to be portable,
always register errors with <a class="link" href="gio-GDBusError.html#g-dbus-error-register-error" title="g_dbus_error_register_error ()"><code class="function">g_dbus_error_register_error()</code></a>
or use <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-dbus-error" title="g_dbus_method_invocation_return_dbus_error ()"><code class="function">g_dbus_method_invocation_return_dbus_error()</code></a>.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<p>Since 2.48, if the method call requested for a reply not to be sent
then this call will free <em class="parameter"><code>invocation</code></em>
 but otherwise do nothing (as per
the recommendations of the D-Bus specification).</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-error.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>domain</p></td>
<td class="parameter_description"><p>A <a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> for the <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> error domain.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>code</p></td>
<td class="parameter_description"><p>The error code.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>format</p></td>
<td class="parameter_description"><p>printf()-style format.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>...</p></td>
<td class="parameter_description"><p>Parameters for <em class="parameter"><code>format</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-error-valist"></a><h3>g_dbus_method_invocation_return_error_valist ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_error_valist
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                <em class="parameter"><code><a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> domain</code></em>,
                                <em class="parameter"><code><a href="../glib-Basic-Types.html#gint"><span class="type">gint</span></a> code</code></em>,
                                <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *format</code></em>,
                                <em class="parameter"><code><span class="type">va_list</span> var_args</code></em>);</pre>
<p>Like <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error" title="g_dbus_method_invocation_return_error ()"><code class="function">g_dbus_method_invocation_return_error()</code></a> but intended for
language bindings.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-error-valist.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>domain</p></td>
<td class="parameter_description"><p>A <a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> for the <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> error domain.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>code</p></td>
<td class="parameter_description"><p>The error code.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>format</p></td>
<td class="parameter_description"><p>printf()-style format.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>var_args</p></td>
<td class="parameter_description"><p><span class="type">va_list</span> of parameters for <em class="parameter"><code>format</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-error-literal"></a><h3>g_dbus_method_invocation_return_error_literal ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_error_literal
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                <em class="parameter"><code><a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> domain</code></em>,
                                <em class="parameter"><code><a href="../glib-Basic-Types.html#gint"><span class="type">gint</span></a> code</code></em>,
                                <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *message</code></em>);</pre>
<p>Like <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error" title="g_dbus_method_invocation_return_error ()"><code class="function">g_dbus_method_invocation_return_error()</code></a> but without <code class="function">printf()</code>-style formatting.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-error-literal.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>domain</p></td>
<td class="parameter_description"><p>A <a href="../glib-Quarks.html#GQuark"><span class="type">GQuark</span></a> for the <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> error domain.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>code</p></td>
<td class="parameter_description"><p>The error code.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>message</p></td>
<td class="parameter_description"><p>The error message.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-gerror"></a><h3>g_dbus_method_invocation_return_gerror ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_gerror
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                <em class="parameter"><code>const <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> *error</code></em>);</pre>
<p>Like <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-error" title="g_dbus_method_invocation_return_error ()"><code class="function">g_dbus_method_invocation_return_error()</code></a> but takes a <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a>
instead of the error domain, error code and message.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-gerror.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>A <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-dbus-error"></a><h3>g_dbus_method_invocation_return_dbus_error ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_dbus_error
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *error_name</code></em>,
                                <em class="parameter"><code>const <a href="../glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *error_message</code></em>);</pre>
<p>Finishes handling a D-Bus method call by returning an error.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-dbus-error.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error_name</p></td>
<td class="parameter_description"><p>A valid D-Bus error name.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error_message</p></td>
<td class="parameter_description"><p>A valid D-Bus error message.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-take-error"></a><h3>g_dbus_method_invocation_take_error ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_take_error (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                     <em class="parameter"><code><a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a> *error</code></em>);</pre>
<p>Like <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-gerror" title="g_dbus_method_invocation_return_gerror ()"><code class="function">g_dbus_method_invocation_return_gerror()</code></a> but takes ownership
of <em class="parameter"><code>error</code></em>
 so the caller does not need to free it.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
<div class="refsect3">
<a name="g-dbus-method-invocation-take-error.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>A <a href="../glib-Error-Reporting.html#GError"><span class="type">GError</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-30.html#api-index-2.30">2.30</a></p>
</div>
<hr>
<div class="refsect2">
<a name="g-dbus-method-invocation-return-value-with-unix-fd-list"></a><h3>g_dbus_method_invocation_return_value_with_unix_fd_list ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
g_dbus_method_invocation_return_value_with_unix_fd_list
                               (<em class="parameter"><code><a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> *invocation</code></em>,
                                <em class="parameter"><code><a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> *parameters</code></em>,
                                <em class="parameter"><code><a class="link" href="GUnixFDList.html" title="GUnixFDList"><span class="type">GUnixFDList</span></a> *fd_list</code></em>);</pre>
<p>Like <a class="link" href="GDBusMethodInvocation.html#g-dbus-method-invocation-return-value" title="g_dbus_method_invocation_return_value ()"><code class="function">g_dbus_method_invocation_return_value()</code></a> but also takes a <a class="link" href="GUnixFDList.html" title="GUnixFDList"><span class="type">GUnixFDList</span></a>.</p>
<p>This method is only available on UNIX.</p>
<p>This method will take ownership of <em class="parameter"><code>invocation</code></em>
. See
<a class="link" href="GDBusConnection.html#GDBusInterfaceVTable" title="GDBusInterfaceVTable"><span class="type">GDBusInterfaceVTable</span></a> for more information about the ownership of
<em class="parameter"><code>invocation</code></em>
.</p>
<div class="refsect3">
<a name="g-dbus-method-invocation-return-value-with-unix-fd-list.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>invocation</p></td>
<td class="parameter_description"><p>A <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>parameters</p></td>
<td class="parameter_description"><p>A <a href="../glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> tuple with out parameters for the method or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if not passing any parameters. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>fd_list</p></td>
<td class="parameter_description"><p>A <a class="link" href="GUnixFDList.html" title="GUnixFDList"><span class="type">GUnixFDList</span></a> or <a href="../glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: <a class="link" href="api-index-2-30.html#api-index-2.30">2.30</a></p>
</div>
</div>
<div class="refsect1">
<a name="GDBusMethodInvocation.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GDBusMethodInvocation-struct"></a><h3>GDBusMethodInvocation</h3>
<pre class="programlisting">typedef struct _GDBusMethodInvocation GDBusMethodInvocation;</pre>
<p>The <a class="link" href="GDBusMethodInvocation.html" title="GDBusMethodInvocation"><span class="type">GDBusMethodInvocation</span></a> structure contains only private data and
should only be accessed using the provided API.</p>
<p class="since">Since: <a class="link" href="api-index-2-26.html#api-index-2.26">2.26</a></p>
</div>
</div>
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